Margaret Montgomery Spini, MD
Family Medicine Physician · San Francisco, CA
Margaret Montgomery Spini, MD is a family medicine physician with a practice address in San Francisco, California, and NPI 1902471261, issued on May 20, 2021. Check the license (California A193797, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Margaret Montgomery Spini
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A193797 CA
Self-reported in NPPES; status is on the state search - Practice location
- 520 Illinois St, San Francisco, CA 94158
- Phone
- (415) 206-6892
- Enumerated
- May 20, 2021
- Record last updated
- Jul 3, 2024
- Fax
- (415) 206-8387
- Medicare enrollment
- Enrolled (PECOS I20240913002389); accepts Medicare assignment
- Medical or professional school
- University Of Maryland School Of Medicine, 2021
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 520 Illinois St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Rutvij Pandya, MDFamily Medicine Physician1043848351
- Rita Wu, MDFamily Medicine Physician1265013106
Verify Margaret Montgomery Spini in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A193797Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
95% fewer Medicare Part D claims than the average family medicine physician in 2024
182 Medicare Part D claims for 35 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium15 claims
- Gabapentin13 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $19.74
1 payment: food and beverage; the largest payer was Organon Llc. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through 2 group practices
- Ucsf Medical Group Business ServicesBerkeley, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Margaret Montgomery Spini among 17,133 family medicine physician records in California
Margaret Montgomery Spini, MD is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2021, is newer than 91% of them.
- NPI issued2021 · 91% of these records are older, 6% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2021 · median 2005 among the 10,652 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Madeline Bell, MDSan Francisco, CA 941581912526724
- Ginger Cupit, D.O.San Francisco, CA 941581356795876
- Stephanie EllisSan Francisco, CA 941581639602998
- Rene Gonzalez, M.D.San Francisco, CA 941581821356791
- Brian HuangSan Francisco, CA 941581942863790
- Blake Kinsel, DOSan Francisco, CA 941581356924831
- Ronald Labuguen, M.D.San Francisco, CA 941581881639417
- Rutvij Pandya, MDSan Francisco, CA 941581043848351
Common questions
What is Margaret Montgomery Spini, MD's NPI number?
Margaret Montgomery Spini, MD's National Provider Identifier (NPI) is 1902471261, issued on May 20, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Montgomery Spini, MD located?
The NPPES record lists a practice address at 520 Illinois St, San Francisco, CA, 94158. Phone: (415) 206-6892. Providers update this record themselves, so call before visiting.
How can I verify Margaret Montgomery Spini, MD's license?
NPPES lists California license number A193797, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Margaret Montgomery Spini, MD prescribe under Medicare Part D?
In 2024, Margaret Montgomery Spini, MD had 182 Medicare Part D claims for 35 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.